Asymmetric epoxidation of olefins catalyzed by Ti(salan) complexes using aqueous hydrogen peroxide as the oxidant

被引：45
|
作者：
Matsumoto, Kazuhiro [1 ]
Sawada, Yuji [1 ]
Katsuki, Tsutomu [1 ]
机构：
[1] Kyushu Univ, Dept Chem, Fac Sci, Grad Sch,Higashi Ku, Fukuoka 8128581, Japan
来源：
PURE AND APPLIED CHEMISTRY | 2008年 / 80卷 / 05期
关键词：
asymmetric synthesis; oxidation; epoxide; titanium; hydrogen peroxide;
D O I：
10.1351/pac200880051071
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ti(salan) complexes were found to be efficient catalysts for asymmetric epoxidation with aqueous hydrogen peroxide as the oxidant. In the presence of pH 7.4 phosphate buffer, the reaction of various conjugate olefins proceeded smoothly to afford the corresponding epoxides in high yield with high enantioselectivity, even on a multigram scale. Ti(salan) complexes could be prepared from Ti(OiPr)(4) and the corresponding salan ligand and directly used without isolation and purification.
引用
收藏
页码：1071 / 1077
页数：7
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